Echoes from classical black holes
نویسندگان
چکیده
We study echoes of free massless scalar from dyonic black holes in Einstein-Maxwell gravity extended with the quasitopological electromagnetic term. These asymptotically flat all satisfy dominant energy condition. find that for suitable parameters, effective potential can have double peaks and consequently quasinormal modes arise. In general echo frequency associated initial wave packet released inside two is about twice one outside.
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ژورنال
عنوان ژورنال: Physical review
سال: 2022
ISSN: ['0556-2813', '1538-4497', '1089-490X']
DOI: https://doi.org/10.1103/physrevd.105.104049